William Lake Provincial Park is a provincial park located in the Rural Municipality of Morton, in southwest Manitoba on Turtle Mountain (49°02′28″N 99°58′23″W / 49.041°N 99.973°W / 49.041; -99.973[1]).

Park amenities include a campground, a beach, and hiking trails.

[2] The trail route passes through the surrounding Turtle Mountain Community Pasture.

[4] The trail climbs to the 'Turtle's Back', giving hikers views of the surrounding area.

[4] The community pasture is 89.33 square kilometres (34.49 sq mi) in size.